細(xì)胞4,細(xì)胞膜與細(xì)胞表面-文庫吧資料
2025-05-19 03:20本頁面
【正文】 的飽和脂肪酸。 膜脂是二維流體， 流動性使膜具有融合、形成網(wǎng)絡(luò)結(jié)構(gòu)和分離電荷的能力。 ? 糖蛋白 通過短的支鏈碳水化合物部分與其他細(xì)胞和胞外結(jié)構(gòu)發(fā)生相互作用 . 糖脂 含有較大的碳水化合物鏈，不同細(xì)胞中所含糖脂的種類不同，動物細(xì)胞中的糖脂都是鞘氨醇的衍生物，含有一個或多個糖殘基。 singlepass transmembrane proteins A transmembrane protein always has a unique orientation in the membrane. This reflects both the asymmetric manner in which it is inserted into the lipid bilayer in the ER during its biosynthesis and the different functions of its cytosolic and noncytosolic domains. These domains are separated by the membranespanning segments of the polypeptide chain. Membrane Proteins Often Function as Large Complexes The threedimensional structure of the photosynthetic reaction center of the bacterium Rhodopseudomonas viridis. 去垢劑 Solubilizing membrane proteins with a mild detergent. The detergent disrupts the lipid bilayer and brings the proteins into solution as proteinlipiddetergent plexes. The phospholipids in the membrane are also solubilized by the detergent. The use of mild detergents for solubilizing, purifying, and reconstituting functional membrane protein systems. 為膜蛋白功能檢測提供了方法。 一些是成孔蛋白，選擇性轉(zhuǎn)運通過小的親水分子或離子。 Bacteriorhodopsin consists largely of membranespanning a he
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